DataVXScience of SinteringPaper
journal article·2021Open access

Structural transformations of a gas-atomized Al62.5Cu25Fe12.5 alloy during detonation spraying, spark plasma sintering and hot pressing

Igor Batraev, Witor Wolf, Boris Bokhonov, Arina Ukhina, Ivanna Kuchumova, Amit Pal, Ivan Bataev, Vladimir Ulianitsky, Dina Dudina, Walter Botta, Alberto Jorge

Science of Sintering· Volume 53· Issue 3
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Source abstract

Abstract

In this work, we traced structural transformations of an Al62.5Cu25Fe12.5 alloy, in which a quasicrystalline icosahedral phase (i-phase) can be formed, upon spraying onto a substrate and consolidation from the powder into the bulk state. The Al62.5Cu25Fe12.5 powder was obtained by gas atomization and consisted of i-phase and ?-phase AlCu(Fe). The powder was detonation sprayed (DS) and consolidated by spark plasma sintering (SPS)/hot pressing (HP). During DS, the particles experienced partial or complete melting and rapid solidification, which resulted in the formation of coatings of a complex structure. The composite regions containing i-phase were inherited from the powder alloy. The fraction of the material that experienced melting solidified as ?-phase AlFe(Cu) in the coating. It was suggested that the difficulty of obtaining i-phase upon post-spray annealing is related to aluminum depletion of the alloy during DS. During SPS and HP, the elemental composition of the alloy was preserved, while the exposure to an elevated temperature led to phase homogenization. SPS and HP conducted at 700?C resulted in full densification and the formation of a single-phase quasicrystalline alloy. The sintered single-phase alloy showed a higher microhardness in comparison with the DS coatings.
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Research context

Metals & alloysCeramics & glassesCompositesMaterials processing

OpenAlex topics: Quasicrystal Structures and Properties · Mineralogy and Gemology Studies · Metallic Glasses and Amorphous Alloys

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Lavrentyev Institute of Hydrodynamics SB RAS, Novosibirsk, Russia

Department of Metallurgical and Materials Engineering, Federal University of Minas Gerais, Belo Horizonte, Brazil

Institute of Solid State Chemistry and Mechanochemistry SB RAS, Novosibirsk, Russia

Lavrentyev Institute of Hydrodynamics SB RAS, Novosibirsk, Russia + Novosibirsk State Technical University, Novosibirsk, Russia

Novosibirsk State University, Novosibirsk, Russia

Novosibirsk State Technical University, Novosibirsk, Russia

Lavrentyev Institute of Hydrodynamics SB RAS, Novosibirsk, Russia + Institute of Solid State Chemistry and Mechanochemistry SB RAS, Novosibirsk, Russia + Novosibirsk State Technical University, Novosibirsk, Russia + Novosibirsk State University, Novosibirsk, Russia

Department of Materials Science and Engineering, Federal University of São Carlos, São Carlos, Brazil

Department of Materials Science and Engineering, Federal University of São Carlos, São Carlos, Brazil + Univ. Grenoble Alpes, Univ. Savoie Mont Blanc, CNRS, Grenoble INP, LEPMI, Grenoble, France Univ. Grenoble Alpes, CNRS, Grenoble INP, SIMAP, Grenoble, France

References

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